wp-content/themes/simple-theme/api-template.php

@@ -0,0 +1,5 @@
+<?php
+/*
+ * Template name: api-template
+ * description: >-
+ */

wp-content/themes/simple-theme/functions.php

@@ -2,6 +2,25 @@
 
 require get_theme_file_path('/api-posts/api-posts.php');
 
+// Add rewrite rule
+add_action('init', function () {
+    add_rewrite_rule('api-template/?$', 'index.php?static_template=api-template', 'top');
+    flush_rewrite_rules(); // Only needed for local development
+});
+
+// Whitelist the custom query var
+add_filter('query_vars', function($queryVars) {
+    $queryVars[] = 'static_template';
+    return $queryVars;
+});
+
+// Conditionally render the custom template
+add_action('template_include', function($template) {
+    if (get_query_var('static_template') == 'api-template') {
+        return get_template_directory(). '/api-template.php';
+    }
+    return $template;
+});
 
 // ? get variables (globally)
 function gV($gv)